Journal
JOURNAL OF MODERN OPTICS
Volume 57, Issue 14-15, Pages 1287-1292Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500341003654443
Keywords
entanglement; phase transition; multiparticle systems
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The pairwise entanglement of an arbitrary atomic pair randomly extracted from a laser-driven dense multiqubit sample in the presence of quantum dissipation due to spontaneous emission is considered. The dipole-dipole interaction between the particles shifts the laser-qubit resonance frequency and consequently modifies the quantum entanglement. By means of an appropriate tuning of the laser frequency, one can optimize the entanglement in this system. For large ensembles, the maximum entanglement occurs near the laser parameters where the steady-state sample exhibits phase transition phenomena.
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